How to delete all children's elements using Python's Tkinter?

Frames are very useful in a Tkinter application. If we define a Frame in an application, it means we have the privilege to add a group of widgets inside it. However, all these widgets are called Children of that particular Frame.

Let us suppose that we want to remove all the children widgets defined in a frame. Then, first we have to get the focus on children using the winfo_children() method. Once we get the focus, we can delete all the existing children using destroy() method.

Example

#Import the Tkinter Library
from tkinter import *

#Create an instance of Tkinter Frame
win = Tk()

#Set the geometry of window
win.geometry("700x350")

#Initialize a Frame
frame = Frame(win)

def clear_all():
   for item in frame.winfo_children():
      item.destroy()
      button.config(state= "disabled")

#Define a ListBox widget
listbox = Listbox(frame, height=10, width= 15, bg= 'grey', activestyle= 'dotbox',font='aerial')
listbox.insert(1,"Go")
listbox.insert(1,"Java")
listbox.insert(1,"Python")
listbox.insert(1,"C++")
listbox.insert(1,"Ruby")

listbox.pack()

label = Label(win, text= "Top 5 Programming Languages", font= ('Helvetica 15 bold'))
label.pack(pady= 20)
frame.pack()

#Create a button to remove all the children in the frame
button = Button(win, text= "Clear All", font= ('Helvetica 11'), command= clear_all)
button.pack()

win.mainloop()

Output

If we execute the above code, it will display a window with a list of items in a list box and a button.

When we click the "Clear All" button, it will remove all the children lying inside the frame object.